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    "headline": "Four Orders Faster, the Collision Chemistry Stayed",
    "slug": "four-orders-faster-the-collision-chemistry-stayed",
    "dek": "Atomistic foundation models reproduced several DFT collision outcomes for ionic-liquid thruster impacts at a fraction of the reported wall time.",
    "summary": "Atomistic foundation models reproduced several DFT collision outcomes for ionic-liquid thruster impacts at a fraction of the reported wall time.",
    "body_text": "The benchmark compares two pretrained interatomic potentials with density-functional-theory molecular dynamics and a reactive force field for 10-to-100-electron-volt ionic-liquid impacts on a gold surface. The learned models recovered dissociation, high-energy fragmentation and hydrogen-fluoride formation seen in DFT/MD but absent from the ReaxFF runs. Two-picosecond trajectories finished in 2.54 and 5.12 minutes—about four orders of magnitude faster than the reported DFT reference. Broader thruster-lifetime use would still require targeted fine-tuning and validation.",
    "why_it_matters": "Atomistic foundation models reproduced several DFT collision outcomes for ionic-liquid thruster impacts at a fraction of the reported wall time.",
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    "first_published_at": "2026-08-13T09:00:00.000-04:00",
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    "tags": [
      "electric propulsion",
      "materials simulation",
      "foundation models"
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      "source_id": "source-2026-08-13-013",
      "title": "arXiv preprint 2608.11558",
      "publisher": "arXiv",
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      "published_at": "2026-08-11T21:47:29.000-04:00",
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  "cite_this_report": {
    "title": "Four Orders Faster, the Collision Chemistry Stayed",
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